Micro-electro-mechanical gyroscope north seeker precision improvement method and micro-electro-mechanical gyroscope north seeker

The invention relates to a method for improving the precision of a micro-electro-mechanical gyroscope north seeker and the micro-electro-mechanical gyroscope north seeker, and the method comprises the following steps: S1, carrying out periodic virtual rotation on a driving working mode and a detection working mode of a micro-electro-mechanical gyroscope, obtaining a first output result of the micro-electro-mechanical gyroscope in the driving working mode and a second output result of the micro-electro-mechanical gyroscope in the detection working mode; s2, carrying out difference on the first output result and the second output result to obtain zero offset drift compensation on the micro-electro-mechanical gyroscope, and summing the first output result and the second output result to obtain a carrier azimuth angle phi; and S3, acquiring a local earth gravity vector based on the micro-mechanical accelerometer, and calculating north orientation information by combining the zero offset drift compensation of the